java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:41:42,530 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:41:42,532 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:41:42,547 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:41:42,547 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:41:42,548 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:41:42,550 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:41:42,552 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:41:42,553 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:41:42,554 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:41:42,555 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:41:42,555 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:41:42,556 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:41:42,557 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:41:42,558 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:41:42,559 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:41:42,560 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:41:42,562 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:41:42,564 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:41:42,566 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:41:42,567 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:41:42,568 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:41:42,570 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:41:42,571 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:41:42,571 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:41:42,572 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:41:42,573 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:41:42,574 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:41:42,575 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:41:42,576 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:41:42,576 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:41:42,577 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:41:42,580 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:41:42,595 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:41:42,595 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:41:42,596 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:41:42,596 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:41:42,597 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:41:42,597 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:41:42,597 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:41:42,597 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:41:42,597 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:41:42,598 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:41:42,598 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:41:42,598 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:41:42,598 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:41:42,598 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:41:42,599 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:41:42,599 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:41:42,599 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:41:42,599 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:41:42,599 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:41:42,599 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:41:42,600 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:41:42,600 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:41:42,600 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:41:42,600 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:41:42,600 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:41:42,601 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:41:42,601 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:41:42,601 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:41:42,647 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:41:42,663 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:41:42,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:41:42,668 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:41:42,668 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:41:42,669 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label15_true-unreach-call.c [2018-10-23 20:41:42,726 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/38a5e6149/0972f5b6f9864d1089fb3b44837d7df5/FLAG6b30ce40a [2018-10-23 20:41:43,442 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:41:43,443 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label15_true-unreach-call.c [2018-10-23 20:41:43,469 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/38a5e6149/0972f5b6f9864d1089fb3b44837d7df5/FLAG6b30ce40a [2018-10-23 20:41:43,491 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/38a5e6149/0972f5b6f9864d1089fb3b44837d7df5 [2018-10-23 20:41:43,505 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:41:43,509 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:41:43,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:41:43,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:41:43,517 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:41:43,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:41:43" (1/1) ... [2018-10-23 20:41:43,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d35362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:41:43, skipping insertion in model container [2018-10-23 20:41:43,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:41:43" (1/1) ... [2018-10-23 20:41:43,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:41:43,667 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:41:44,743 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:41:44,752 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:41:45,102 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:41:45,124 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:41:45,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:41:45 WrapperNode [2018-10-23 20:41:45,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:41:45,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:41:45,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:41:45,126 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:41:45,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:41:45" (1/1) ... [2018-10-23 20:41:45,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:41:45" (1/1) ... [2018-10-23 20:41:45,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:41:45,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:41:45,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:41:45,687 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:41:45,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:41:45" (1/1) ... [2018-10-23 20:41:45,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:41:45" (1/1) ... [2018-10-23 20:41:45,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:41:45" (1/1) ... [2018-10-23 20:41:45,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:41:45" (1/1) ... [2018-10-23 20:41:45,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:41:45" (1/1) ... [2018-10-23 20:41:45,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:41:45" (1/1) ... [2018-10-23 20:41:45,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:41:45" (1/1) ... [2018-10-23 20:41:45,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:41:45,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:41:45,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:41:45,964 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:41:45,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:41:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:41:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:41:46,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:41:46,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:41:55,296 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:41:55,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:41:55 BoogieIcfgContainer [2018-10-23 20:41:55,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:41:55,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:41:55,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:41:55,302 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:41:55,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:41:43" (1/3) ... [2018-10-23 20:41:55,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44475c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:41:55, skipping insertion in model container [2018-10-23 20:41:55,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:41:45" (2/3) ... [2018-10-23 20:41:55,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44475c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:41:55, skipping insertion in model container [2018-10-23 20:41:55,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:41:55" (3/3) ... [2018-10-23 20:41:55,306 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label15_true-unreach-call.c [2018-10-23 20:41:55,317 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:41:55,326 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:41:55,345 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:41:55,392 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:41:55,392 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:41:55,393 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:41:55,393 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:41:55,393 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:41:55,393 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:41:55,393 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:41:55,393 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:41:55,394 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:41:55,437 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 20:41:55,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-23 20:41:55,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:41:55,454 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:41:55,457 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:41:55,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:41:55,465 INFO L82 PathProgramCache]: Analyzing trace with hash 680225122, now seen corresponding path program 1 times [2018-10-23 20:41:55,467 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:41:55,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:41:55,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:55,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:55,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:55,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:41:55,909 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:41:55,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:41:55,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:41:55,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:41:55,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:41:55,934 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 20:42:09,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:42:09,554 INFO L93 Difference]: Finished difference Result 2102 states and 3914 transitions. [2018-10-23 20:42:09,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:42:09,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-10-23 20:42:09,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:42:09,614 INFO L225 Difference]: With dead ends: 2102 [2018-10-23 20:42:09,614 INFO L226 Difference]: Without dead ends: 1504 [2018-10-23 20:42:09,627 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:42:09,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2018-10-23 20:42:09,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1491. [2018-10-23 20:42:09,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1491 states. [2018-10-23 20:42:09,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2416 transitions. [2018-10-23 20:42:09,787 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2416 transitions. Word has length 37 [2018-10-23 20:42:09,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:42:09,788 INFO L481 AbstractCegarLoop]: Abstraction has 1491 states and 2416 transitions. [2018-10-23 20:42:09,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:42:09,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2416 transitions. [2018-10-23 20:42:09,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-23 20:42:09,794 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:42:09,795 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:42:09,795 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:42:09,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:42:09,796 INFO L82 PathProgramCache]: Analyzing trace with hash 469984361, now seen corresponding path program 1 times [2018-10-23 20:42:09,796 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:42:09,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:42:09,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:42:09,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:42:09,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:42:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:42:10,014 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:42:10,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:42:10,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:42:10,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:42:10,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:42:10,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:42:10,017 INFO L87 Difference]: Start difference. First operand 1491 states and 2416 transitions. Second operand 4 states. [2018-10-23 20:42:21,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:42:21,290 INFO L93 Difference]: Finished difference Result 4268 states and 6993 transitions. [2018-10-23 20:42:21,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:42:21,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2018-10-23 20:42:21,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:42:21,307 INFO L225 Difference]: With dead ends: 4268 [2018-10-23 20:42:21,307 INFO L226 Difference]: Without dead ends: 2779 [2018-10-23 20:42:21,310 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:42:21,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2018-10-23 20:42:21,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2779. [2018-10-23 20:42:21,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2779 states. [2018-10-23 20:42:21,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 3841 transitions. [2018-10-23 20:42:21,364 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 3841 transitions. Word has length 105 [2018-10-23 20:42:21,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:42:21,365 INFO L481 AbstractCegarLoop]: Abstraction has 2779 states and 3841 transitions. [2018-10-23 20:42:21,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:42:21,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 3841 transitions. [2018-10-23 20:42:21,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-23 20:42:21,370 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:42:21,370 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:42:21,370 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:42:21,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:42:21,371 INFO L82 PathProgramCache]: Analyzing trace with hash -445607114, now seen corresponding path program 1 times [2018-10-23 20:42:21,371 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:42:21,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:42:21,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:42:21,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:42:21,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:42:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:42:21,723 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:42:21,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:42:21,724 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:42:21,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:42:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:42:21,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:42:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:42:22,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:42:22,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 20:42:22,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:42:22,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:42:22,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:42:22,032 INFO L87 Difference]: Start difference. First operand 2779 states and 3841 transitions. Second operand 6 states. [2018-10-23 20:42:38,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:42:38,511 INFO L93 Difference]: Finished difference Result 13733 states and 18932 transitions. [2018-10-23 20:42:38,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 20:42:38,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-10-23 20:42:38,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:42:38,557 INFO L225 Difference]: With dead ends: 13733 [2018-10-23 20:42:38,557 INFO L226 Difference]: Without dead ends: 8351 [2018-10-23 20:42:38,565 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:42:38,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8351 states. [2018-10-23 20:42:38,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8351 to 7060. [2018-10-23 20:42:38,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7060 states. [2018-10-23 20:42:38,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7060 states to 7060 states and 8761 transitions. [2018-10-23 20:42:38,697 INFO L78 Accepts]: Start accepts. Automaton has 7060 states and 8761 transitions. Word has length 108 [2018-10-23 20:42:38,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:42:38,697 INFO L481 AbstractCegarLoop]: Abstraction has 7060 states and 8761 transitions. [2018-10-23 20:42:38,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 20:42:38,697 INFO L276 IsEmpty]: Start isEmpty. Operand 7060 states and 8761 transitions. [2018-10-23 20:42:38,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-23 20:42:38,705 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:42:38,705 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:42:38,709 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:42:38,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:42:38,710 INFO L82 PathProgramCache]: Analyzing trace with hash 2115030227, now seen corresponding path program 1 times [2018-10-23 20:42:38,710 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:42:38,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:42:38,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:42:38,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:42:38,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:42:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:42:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:42:38,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:42:38,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:42:38,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:42:38,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:42:38,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:42:38,944 INFO L87 Difference]: Start difference. First operand 7060 states and 8761 transitions. Second operand 3 states. [2018-10-23 20:42:42,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:42:42,751 INFO L93 Difference]: Finished difference Result 17103 states and 21856 transitions. [2018-10-23 20:42:42,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:42:42,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2018-10-23 20:42:42,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:42:42,792 INFO L225 Difference]: With dead ends: 17103 [2018-10-23 20:42:42,792 INFO L226 Difference]: Without dead ends: 10472 [2018-10-23 20:42:42,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:42:42,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10472 states. [2018-10-23 20:42:42,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10472 to 10472. [2018-10-23 20:42:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10472 states. [2018-10-23 20:42:42,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10472 states to 10472 states and 12687 transitions. [2018-10-23 20:42:42,970 INFO L78 Accepts]: Start accepts. Automaton has 10472 states and 12687 transitions. Word has length 187 [2018-10-23 20:42:42,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:42:42,971 INFO L481 AbstractCegarLoop]: Abstraction has 10472 states and 12687 transitions. [2018-10-23 20:42:42,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:42:42,971 INFO L276 IsEmpty]: Start isEmpty. Operand 10472 states and 12687 transitions. [2018-10-23 20:42:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-10-23 20:42:42,977 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:42:42,978 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:42:42,978 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:42:42,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:42:42,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1359024060, now seen corresponding path program 1 times [2018-10-23 20:42:42,978 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:42:42,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:42:42,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:42:42,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:42:42,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:42:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:42:43,676 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 251 proven. 83 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-23 20:42:43,677 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:42:43,677 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:42:43,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:42:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:42:43,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:42:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 251 proven. 83 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-23 20:42:44,155 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:42:44,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-10-23 20:42:44,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:42:44,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:42:44,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:42:44,157 INFO L87 Difference]: Start difference. First operand 10472 states and 12687 transitions. Second operand 7 states. [2018-10-23 20:42:57,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:42:57,857 INFO L93 Difference]: Finished difference Result 33375 states and 40551 transitions. [2018-10-23 20:42:57,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:42:57,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2018-10-23 20:42:57,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:42:57,908 INFO L225 Difference]: With dead ends: 33375 [2018-10-23 20:42:57,908 INFO L226 Difference]: Without dead ends: 21139 [2018-10-23 20:42:57,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-23 20:42:57,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21139 states. [2018-10-23 20:42:58,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21139 to 17244. [2018-10-23 20:42:58,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17244 states. [2018-10-23 20:42:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17244 states to 17244 states and 19941 transitions. [2018-10-23 20:42:58,211 INFO L78 Accepts]: Start accepts. Automaton has 17244 states and 19941 transitions. Word has length 354 [2018-10-23 20:42:58,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:42:58,212 INFO L481 AbstractCegarLoop]: Abstraction has 17244 states and 19941 transitions. [2018-10-23 20:42:58,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:42:58,212 INFO L276 IsEmpty]: Start isEmpty. Operand 17244 states and 19941 transitions. [2018-10-23 20:42:58,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-10-23 20:42:58,221 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:42:58,222 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:42:58,222 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:42:58,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:42:58,222 INFO L82 PathProgramCache]: Analyzing trace with hash 2059194911, now seen corresponding path program 1 times [2018-10-23 20:42:58,222 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:42:58,223 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:42:58,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:42:58,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:42:58,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:42:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:42:58,947 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 104 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:42:58,947 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:42:58,948 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:42:58,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:42:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:42:59,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:42:59,442 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 20 [2018-10-23 20:43:00,337 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 258 proven. 83 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-23 20:43:00,369 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:43:00,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 6 [2018-10-23 20:43:00,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:43:00,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:43:00,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:43:00,371 INFO L87 Difference]: Start difference. First operand 17244 states and 19941 transitions. Second operand 7 states. [2018-10-23 20:43:13,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:43:13,099 INFO L93 Difference]: Finished difference Result 46856 states and 53568 transitions. [2018-10-23 20:43:13,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 20:43:13,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 361 [2018-10-23 20:43:13,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:43:13,158 INFO L225 Difference]: With dead ends: 46856 [2018-10-23 20:43:13,158 INFO L226 Difference]: Without dead ends: 29173 [2018-10-23 20:43:13,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 359 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:43:13,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29173 states. [2018-10-23 20:43:13,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29173 to 23596. [2018-10-23 20:43:13,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23596 states. [2018-10-23 20:43:13,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23596 states to 23596 states and 26193 transitions. [2018-10-23 20:43:13,535 INFO L78 Accepts]: Start accepts. Automaton has 23596 states and 26193 transitions. Word has length 361 [2018-10-23 20:43:13,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:43:13,535 INFO L481 AbstractCegarLoop]: Abstraction has 23596 states and 26193 transitions. [2018-10-23 20:43:13,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:43:13,536 INFO L276 IsEmpty]: Start isEmpty. Operand 23596 states and 26193 transitions. [2018-10-23 20:43:13,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2018-10-23 20:43:13,550 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:43:13,550 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:43:13,551 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:43:13,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:43:13,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1653139911, now seen corresponding path program 1 times [2018-10-23 20:43:13,551 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:43:13,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:43:13,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:13,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:43:13,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:43:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2018-10-23 20:43:14,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:43:14,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:43:14,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:43:14,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:43:14,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:43:14,252 INFO L87 Difference]: Start difference. First operand 23596 states and 26193 transitions. Second operand 4 states. [2018-10-23 20:43:21,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:43:21,228 INFO L93 Difference]: Finished difference Result 53596 states and 60432 transitions. [2018-10-23 20:43:21,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:43:21,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 483 [2018-10-23 20:43:21,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:43:21,280 INFO L225 Difference]: With dead ends: 53596 [2018-10-23 20:43:21,280 INFO L226 Difference]: Without dead ends: 32974 [2018-10-23 20:43:21,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:43:21,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32974 states. [2018-10-23 20:43:21,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32974 to 31688. [2018-10-23 20:43:21,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31688 states. [2018-10-23 20:43:21,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31688 states to 31688 states and 34765 transitions. [2018-10-23 20:43:21,666 INFO L78 Accepts]: Start accepts. Automaton has 31688 states and 34765 transitions. Word has length 483 [2018-10-23 20:43:21,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:43:21,667 INFO L481 AbstractCegarLoop]: Abstraction has 31688 states and 34765 transitions. [2018-10-23 20:43:21,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:43:21,667 INFO L276 IsEmpty]: Start isEmpty. Operand 31688 states and 34765 transitions. [2018-10-23 20:43:21,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2018-10-23 20:43:21,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:43:21,688 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:43:21,688 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:43:21,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:43:21,689 INFO L82 PathProgramCache]: Analyzing trace with hash -564707112, now seen corresponding path program 1 times [2018-10-23 20:43:21,689 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:43:21,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:43:21,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:21,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:43:21,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:43:22,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 541 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-23 20:43:22,239 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:43:22,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:43:22,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:43:22,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:43:22,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:43:22,241 INFO L87 Difference]: Start difference. First operand 31688 states and 34765 transitions. Second operand 3 states. [2018-10-23 20:43:27,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:43:27,661 INFO L93 Difference]: Finished difference Result 70622 states and 77532 transitions. [2018-10-23 20:43:27,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:43:27,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 539 [2018-10-23 20:43:27,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:43:27,698 INFO L225 Difference]: With dead ends: 70622 [2018-10-23 20:43:27,699 INFO L226 Difference]: Without dead ends: 39788 [2018-10-23 20:43:27,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:43:27,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39788 states. [2018-10-23 20:43:28,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39788 to 38505. [2018-10-23 20:43:28,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38505 states. [2018-10-23 20:43:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38505 states to 38505 states and 41775 transitions. [2018-10-23 20:43:28,135 INFO L78 Accepts]: Start accepts. Automaton has 38505 states and 41775 transitions. Word has length 539 [2018-10-23 20:43:28,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:43:28,136 INFO L481 AbstractCegarLoop]: Abstraction has 38505 states and 41775 transitions. [2018-10-23 20:43:28,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:43:28,136 INFO L276 IsEmpty]: Start isEmpty. Operand 38505 states and 41775 transitions. [2018-10-23 20:43:28,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2018-10-23 20:43:28,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:43:28,160 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:43:28,161 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:43:28,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:43:28,161 INFO L82 PathProgramCache]: Analyzing trace with hash -953741318, now seen corresponding path program 1 times [2018-10-23 20:43:28,161 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:43:28,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:43:28,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:28,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:43:28,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:43:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 541 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-23 20:43:28,951 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:43:28,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:43:28,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:43:28,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:43:28,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:43:28,953 INFO L87 Difference]: Start difference. First operand 38505 states and 41775 transitions. Second operand 5 states. [2018-10-23 20:43:36,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:43:36,634 INFO L93 Difference]: Finished difference Result 88960 states and 96764 transitions. [2018-10-23 20:43:36,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:43:36,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 567 [2018-10-23 20:43:36,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:43:36,695 INFO L225 Difference]: With dead ends: 88960 [2018-10-23 20:43:36,695 INFO L226 Difference]: Without dead ends: 54725 [2018-10-23 20:43:36,718 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:43:36,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54725 states. [2018-10-23 20:43:37,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54725 to 50037. [2018-10-23 20:43:37,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50037 states. [2018-10-23 20:43:37,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50037 states to 50037 states and 54009 transitions. [2018-10-23 20:43:37,272 INFO L78 Accepts]: Start accepts. Automaton has 50037 states and 54009 transitions. Word has length 567 [2018-10-23 20:43:37,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:43:37,273 INFO L481 AbstractCegarLoop]: Abstraction has 50037 states and 54009 transitions. [2018-10-23 20:43:37,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:43:37,276 INFO L276 IsEmpty]: Start isEmpty. Operand 50037 states and 54009 transitions. [2018-10-23 20:43:37,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2018-10-23 20:43:37,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:43:37,299 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:43:37,299 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:43:37,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:43:37,300 INFO L82 PathProgramCache]: Analyzing trace with hash 523501321, now seen corresponding path program 1 times [2018-10-23 20:43:37,300 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:43:37,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:43:37,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:37,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:43:37,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:43:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2018-10-23 20:43:37,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:43:37,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 20:43:37,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:43:37,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:43:37,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:43:37,763 INFO L87 Difference]: Start difference. First operand 50037 states and 54009 transitions. Second operand 3 states. [2018-10-23 20:43:40,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:43:40,638 INFO L93 Difference]: Finished difference Result 98785 states and 106695 transitions. [2018-10-23 20:43:40,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:43:40,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 574 [2018-10-23 20:43:40,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:43:40,689 INFO L225 Difference]: With dead ends: 98785 [2018-10-23 20:43:40,689 INFO L226 Difference]: Without dead ends: 49601 [2018-10-23 20:43:40,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:43:40,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49601 states. [2018-10-23 20:43:41,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49601 to 49170. [2018-10-23 20:43:41,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49170 states. [2018-10-23 20:43:41,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49170 states to 49170 states and 53080 transitions. [2018-10-23 20:43:41,602 INFO L78 Accepts]: Start accepts. Automaton has 49170 states and 53080 transitions. Word has length 574 [2018-10-23 20:43:41,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:43:41,603 INFO L481 AbstractCegarLoop]: Abstraction has 49170 states and 53080 transitions. [2018-10-23 20:43:41,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:43:41,603 INFO L276 IsEmpty]: Start isEmpty. Operand 49170 states and 53080 transitions. [2018-10-23 20:43:41,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2018-10-23 20:43:41,617 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:43:41,618 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:43:41,618 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:43:41,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:43:41,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1499392919, now seen corresponding path program 1 times [2018-10-23 20:43:41,619 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:43:41,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:43:41,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:41,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:43:41,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:43:42,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 574 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2018-10-23 20:43:42,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:43:42,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:43:42,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:43:42,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:43:42,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:43:42,325 INFO L87 Difference]: Start difference. First operand 49170 states and 53080 transitions. Second operand 5 states. [2018-10-23 20:43:51,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:43:51,522 INFO L93 Difference]: Finished difference Result 111559 states and 120399 transitions. [2018-10-23 20:43:51,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 20:43:51,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 602 [2018-10-23 20:43:51,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:43:51,587 INFO L225 Difference]: With dead ends: 111559 [2018-10-23 20:43:51,588 INFO L226 Difference]: Without dead ends: 67934 [2018-10-23 20:43:51,617 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:43:51,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67934 states. [2018-10-23 20:43:52,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67934 to 51725. [2018-10-23 20:43:52,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51725 states. [2018-10-23 20:43:52,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51725 states to 51725 states and 55814 transitions. [2018-10-23 20:43:52,678 INFO L78 Accepts]: Start accepts. Automaton has 51725 states and 55814 transitions. Word has length 602 [2018-10-23 20:43:52,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:43:52,678 INFO L481 AbstractCegarLoop]: Abstraction has 51725 states and 55814 transitions. [2018-10-23 20:43:52,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:43:52,679 INFO L276 IsEmpty]: Start isEmpty. Operand 51725 states and 55814 transitions. [2018-10-23 20:43:52,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2018-10-23 20:43:52,689 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:43:52,690 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:43:52,690 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:43:52,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:43:52,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1617078907, now seen corresponding path program 1 times [2018-10-23 20:43:52,690 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:43:52,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:43:52,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:52,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:43:52,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:43:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:43:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 635 proven. 248 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-10-23 20:43:53,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:43:53,615 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:43:53,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:43:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:43:53,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:44:12,517 WARN L179 SmtUtils]: Spent 16.23 s on a formula simplification. DAG size of input: 194 DAG size of output: 102 [2018-10-23 20:44:14,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2018-10-23 20:44:14,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:44:14,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2018-10-23 20:44:14,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:44:14,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:44:14,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=50, Unknown=1, NotChecked=0, Total=72 [2018-10-23 20:44:14,254 INFO L87 Difference]: Start difference. First operand 51725 states and 55814 transitions. Second operand 9 states. Received shutdown request... [2018-10-23 20:45:55,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:45:55,489 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:45:55,495 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:45:55,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:45:55 BoogieIcfgContainer [2018-10-23 20:45:55,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:45:55,496 INFO L168 Benchmark]: Toolchain (without parser) took 251990.42 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 840.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:45:55,497 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:45:55,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1614.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:45:55,499 INFO L168 Benchmark]: Boogie Procedure Inliner took 560.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -894.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:45:55,500 INFO L168 Benchmark]: Boogie Preprocessor took 276.29 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2018-10-23 20:45:55,501 INFO L168 Benchmark]: RCFGBuilder took 9334.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 471.2 MB). Peak memory consumption was 471.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:45:55,502 INFO L168 Benchmark]: TraceAbstraction took 240197.37 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.9 GB in the end (delta: -1.3 GB). Peak memory consumption was 326.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:45:55,507 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1614.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 560.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -894.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 276.29 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9334.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 471.2 MB). Peak memory consumption was 471.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 240197.37 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.9 GB in the end (delta: -1.3 GB). Peak memory consumption was 326.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 116). Cancelled while BasicCegarLoop was constructing difference of abstraction (51725states) and FLOYD_HOARE automaton (currently 3 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (53 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 240.1s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 205.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4210 SDtfs, 14351 SDslu, 2388 SDs, 0 SdLazy, 38454 SolverSat, 5737 SolverUnsat, 49 SolverUnknown, 0 SolverNotchecked, 190.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1487 GetRequests, 1442 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 23.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51725occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 34673 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 26.4s InterpolantComputationTime, 5964 NumberOfCodeBlocks, 5964 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 5948 ConstructedInterpolants, 343 QuantifiedInterpolants, 14166664 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1894 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 16 InterpolantComputations, 10 PerfectInterpolantSequences, 7856/8659 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown